Physics 202 Winter 2012 NAME
Midterm Exam #2
Partl Multiple Choice Questions
1) 8 The Tonga Trench in the Pacic Ocean is 36,000 feet deep. Assuming that
sea water has an average" density of 1.04 g/cm3, calculate the absolute pressure at the
bottom of th
* 3. The density and
_ in: pressure approach
W311§0fn - _ - - _ _- zero in outer space.
1mag1nary *_ ¥ '
container \ '. ~_ s 2. Because nf gravity,
' I ' the density and
i - pressure decrease
with increasing height.
Chapter 9 Solutions
9.6. Set Up:
(a) The period is
(b) The period is
*9.17. Set Up:
Let the direction of rotation of the flywheel be positive.
(b) Use information in part (a) to find
Chapter 11 Solutions
11.8. Set Up:
A 5.0% elongation means
For a spring,
The change in length is
*11.9. Set Up:
From Problem 11.8,
natural Achilles tendon.
and the diameter is 2.2 mm.
Chapter 15 Solutions
15.8. Set Up:
must be in kelvins. Express M in
and p in Pa.
(b) Example 15.4 calculates the density of air at
The density of the
atmosphere of Mars is much less, the density for Venus is much greater, and
Chapter 14 Solutions
14.3. Set Up:
is the same on the Celsius and Kelvin scales.
14.9. Set Up: Let
14.14. Set Up: Find the change
in the diameter of the lid. The diameter of the lid expands according to
Chapter 12 Solutions:
*12.1. Set Up:
The range of wavelengths is 1.7 cm to 17 m.
The range of frequencies for visible light is
Reflect: For a given
corresponds to smaller
12.2. Set Up:
Goals for Chapter 15
- To understand and learn to use the mole and
- To see applications for equations of state.
- To study the kinetic theory of an ideal gas.
- To explore heat capacities.
*- To learn and apply the First Law of
Chapter 10 Solutions
10.5. Set Up: Let counterclockwise torques be positive.
Reflect: It is important to take into account the direction of each torque when computing the net torque.
10.9. Set Up: Let the direction the g
The Basic Energy Model P = E :g. F r: P F}
Energy in Energy out
w : F 574
2 WAX : W
Slide 10-13 Energy Transformations
The envimnmmr is everything , _ .
. 1 . I 1 Kinetic energy K = energy of motion
that is nor purl ol th
Reading Quiz CI?
3. The buoyant force on an object submerged in a liquid depends
A. the objects mass.
B. the objects volume.
C. the density of the liquid.
D. both B and C.
t' fllllll'cmsun1'.dm.':l1iun. Im'. Answer
3. The buoyant force on an object su
Density is a macroscopic measurable that gives us
some insight to atomic spacing
Ciaj CMWCCJLUIISWC; #6
g; majiff/M Densny
Mesa density clun chjcci of 1111155 m and mlume V
Substance p (kg/m3)
Helium gas (200C) 0.166
Air (20°C) 1.20
- Place a salt shaker on a lazy susan and shine a bright ashlight from the side as it
goes around casting a shadow on a wall behind.
'ODSEWE SHM in the motion of the shadow as the salt shaker traces out the reference
Illuminated vertical screen